compositor-worker: cc->blink mutation plumbing

content/renderer/render_widget.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_widget.h"
 
 #include <utility>
 
 #include "base/auto_reset.h"
 #include "base/bind.h"
@@ skipping 982 matching lines @@
     const gfx::Vector2dF& inner_delta,
     const gfx::Vector2dF& outer_delta,
     const gfx::Vector2dF& elastic_overscroll_delta,
     float page_scale,
     float top_controls_delta) {
   webwidget_->applyViewportDeltas(inner_delta, outer_delta,
                                   elastic_overscroll_delta, page_scale,
                                   top_controls_delta);
 }
 
+void RenderWidget::ApplyMutations(const cc::LayerTreeMutations& mutations) {
+  TRACE_EVENT0("compositor-worker", "RenderWidget::ApplyMutations");

[Ian Vollick, 2016/01/22 21:56:53]

Please use TRACE_DISABLED_BY_DEFAULT (eg,
https://code.google.com/p/chromium/codesearch#chromium/src/v8/src/log-inl.h&q...).
Here and elsewhere.

[majidvp, 2016/01/22 23:32:06]

Done.

+  webwidget_->applyMutations(
+      static_cast<const blink::WebCompositorMutations&>(mutations));
+}
+
 void RenderWidget::BeginMainFrame(double frame_time_sec) {
   webwidget_->beginFrame(frame_time_sec);
 }
 
 scoped_ptr<cc::OutputSurface> RenderWidget::CreateOutputSurface(bool fallback) {
   DCHECK(webwidget_);
   // For widgets that are never visible, we don't start the compositor, so we
   // never get a request for a cc::OutputSurface.
   DCHECK(!compositor_never_visible_);
 
@@ skipping 1258 matching lines @@
 void RenderWidget::RegisterVideoHoleFrame(RenderFrameImpl* frame) {
   video_hole_frames_.AddObserver(frame);
 }
 
 void RenderWidget::UnregisterVideoHoleFrame(RenderFrameImpl* frame) {
   video_hole_frames_.RemoveObserver(frame);
 }
 #endif  // defined(VIDEO_HOLE)
 
 }  // namespace content